This document compares poured concrete and block wall basements. Poured concrete walls are stronger, have higher fire resistance, and better water resistance than block walls. They are constructed all at once by pouring concrete into a frame. Block walls are weaker but easier to repair by replacing individual blocks. The document also outlines DOSH rules for excavation work, including guard rails around excavations and ladders for access. It defines ground anchors used to transmit tensile loads into the ground and describes types like straight shaft and underreamed anchors. Finally, common basement problems like sump pump failure, cracks from shrinkage and settling, and their causes are discussed.